in fact masking wasn't working, HistogramRegistration takes mask as numpy not nibabel
Merge pull request #545 from bpinsard/fix/nipy

allow similarity computation without mask
fix imports
Merge branch 'enh/dcmstack' into testing

* enh/dcmstack:
  fix imports
Merge pull request #500 from bpinsard/fsl_b0

Sigloss interface, fugue forward/backward warping
Fixed tests.
Doctests fix
merge
allow nested directory sequences
Merge branch 'enh/dcmstack' into testing

* enh/dcmstack:
  allow nested directory sequences
Merge branch 'master' into enh/dcmstack

* master: (45 commits)
  Doctests fix
  Fixed tests.
  in fact masking wasn't working, HistogramRegistration takes mask as numpy not nibabel
  allow similarity computation without mask
  Added [xor] metadata to afni.AutoTcorrelate
  added mask_source option to afni.AutoTcorrelate
  added mask_source option to afni.AutoTcorrelate
  Fixed error in _rotate_bvec that was adding an extra entry to the output rotated_bvecs file and offsetting the correction by one volume.
  fix fugue for not necessarly wanted output
  add Bandpass to init
  homogenize name function accross interfaces
  fixing for new gen_filename autopep8
  autopep8
  few interfaces added, pep8
  add min version for bbr options
  pep8
  doctest
  Modified create_dmri_preprocessing to allow for pipeline use with and without fieldmap files  - Added use_fieldmap flag to create_dmri_preprocessing
  fix forward_warping input
  fixes
  ...
Merge branch 'enh/dcmstack' into testing

* enh/dcmstack: